DE915649C - Galilean finder for photographic cameras combined with a basic range finder - Google Patents
Galilean finder for photographic cameras combined with a basic range finderInfo
- Publication number
- DE915649C DE915649C DEP7549D DEP0007549D DE915649C DE 915649 C DE915649 C DE 915649C DE P7549 D DEP7549 D DE P7549D DE P0007549 D DEP0007549 D DE P0007549D DE 915649 C DE915649 C DE 915649C
- Authority
- DE
- Germany
- Prior art keywords
- mark
- beam path
- viewfinder
- rangefinder
- range finder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
- G03B13/02—Viewfinders
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Viewfinders (AREA)
Description
Die Erfindung betrifft einen mit einem Entfernungsmesser vereinigten Sucher, bei dem infolge Galileischer Bauart virtuelle Bilder im Sucher- und Entfernungsmesserstrahlengang entworfen werden und die Bildbegrenzung in den Sucherstrahlengang eingespiegelt wird. Bei den bisher bekanntgewordenen derartigen Systemen wurde dies dadurch erreicht, daß eine Bildausschnittmarke durch eine Sammellinse und einen Spiegel in den Sucherstrahlengang abgebildet wurde. Diese Sammellinse und der Spiegel wurden außer der Bildausschnittmarke als zusätzliche Teile benötigt.The invention relates to a combined with a range finder Viewfinder, in which, due to the Galilean design, virtual images in the viewfinder and rangefinder beam path and the image boundary is reflected in the viewfinder beam path will. In the systems of this type that have become known up to now, this has been achieved by that a cropping mark through a converging lens and a mirror into the viewfinder beam path was pictured. This converging lens and the mirror were except for the cropping mark needed as additional parts.
In der erfindungsgemäßen Anordnung werden zur Einspiegelung der Bildausschnittmarke nur die bereits vorhandenen, zum Entfernungsmesser gehörenden optischen Teile benutzt. Dazu ist die erfindungsgemäße Anordnung so ausgebildet, daß der Sucher je eine Zerstreuungslinse als Objektiv in dem geraden und geknickten Entfernungsmesserstrahlengang hat, die Bildausschnittmarke in dem einen Teil -strahlengang des Entfernungsmessers, und zwar im objektseitigen Brennpunkt des Sucherokulars liegt, und daß außerdem diejenige Zerstreuungslinse des Suchers, die in dem die Marke enthaltenden Strahlengang des Entfernungsmessers liegt, gegebenenfalls samt ihrer Fassung einen Teil des Beleuchtungsbündels für die Marke vorbeitreten läßt. Als Spiegel zur Beleuchtung der Bildausschnittmarke ist der eine Bäsisendreflektor des Entfernungsmessers vorgesehen. Eine derartige Ausführungsform eignet sich besonders gut für Entfernungsmesser, die eine relativ kurze Basis haben.In the arrangement according to the invention, the image detail mark is reflected in only the existing optical parts belonging to the range finder are used. For this purpose, the arrangement according to the invention is designed in such a way that the viewfinder has one diverging lens as a lens in the straight and bent rangefinder beam path that Image detail mark in one part of the beam path of the rangefinder, and although lies in the object-side focus of the viewfinder eyepiece, and that also the one The diverging lens of the viewfinder placed in the beam path of the Range finder lies, possibly including its socket, a part of the lighting bundle for the brand to come by. As a mirror to illuminate the cropping mark one base reflector of the range finder is provided. Such a one Embodiment is particularly suitable for rangefinders that have a relatively have a short base.
Eine Ausführungsform des Erfindungsgegenstandes ist in der Zeichnung dargestellt.An embodiment of the subject matter of the invention is shown in the drawing shown.
In dieser Zeichnung ist 5 das eine; i das andere, und zwar plankonkav ausgebildete Sucherobjektiv, das einen optisch unwirksamen planparallelen Außenring ia hat. Durch diesen planparallelen Außenring hindurch kann man mittels des Sucherokulars 3 die Linien der sich im Entfernungsmesserstrahlengang befindlichen Bildausschnittmarke 2 scharf sehen. Die Bildausschnittmarke 2 ist in ihrem zentralen Teil :211 lichtdurchlässig. Dieser lichtdurchlässige Teil 2,a kann so dimensioniert werden, daß seine Umgrenzungskante das mittlere Entfernungsmesserbild ebenfalls scharf begrenzt. Die Beleuchtung der Bildausschnittmarke 2 erfolgt durch den einen Basisendspiegel q. des Entfernungsmessers, der, um die Durchleuchtung der Bildausschnittmarke zu ermöglichen, entsprechend groß ausgebildet sein muß.In this drawing, 5 is one; i the other, namely plano-concave trained viewfinder lens, which has an optically ineffective plane-parallel outer ring ia has. One can pass through this plane-parallel outer ring by means of the viewfinder eyepiece 3 the lines of the image detail mark located in the range finder beam path 2 see sharply. The image detail mark 2 is translucent in its central part: 211. This translucent part 2, a can be dimensioned so that its boundary edge the mean rangefinder image is also sharply delimited. The lighting of the Image detail mark 2 takes place through the one base end mirror q. the range finder, which, in order to enable the image detail mark to be screened, accordingly must be made large.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP7549D DE915649C (en) | 1948-10-02 | 1948-10-02 | Galilean finder for photographic cameras combined with a basic range finder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP7549D DE915649C (en) | 1948-10-02 | 1948-10-02 | Galilean finder for photographic cameras combined with a basic range finder |
Publications (1)
Publication Number | Publication Date |
---|---|
DE915649C true DE915649C (en) | 1954-07-26 |
Family
ID=7361240
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEP7549D Expired DE915649C (en) | 1948-10-02 | 1948-10-02 | Galilean finder for photographic cameras combined with a basic range finder |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE915649C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2940354A (en) * | 1957-09-07 | 1960-06-14 | Eastman Kodak Co | Combined range- and view-finders having projected frame lines |
US3041919A (en) * | 1956-12-20 | 1962-07-03 | Agfa Ag | Combined range and view finder |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE712350C (en) * | 1938-02-03 | 1941-10-16 | Zeiss Ikon Akt Ges | Viewfinder united with the range finder |
DE718203C (en) * | 1939-06-04 | 1942-04-09 | Leitz Ernst Gmbh | Finder for photographic apparatus combined with the range finder |
DE732199C (en) * | 1940-11-02 | 1943-02-25 | Zeiss Ikon Ag | Viewfinder combined with a range finder |
DE747843C (en) * | 1941-01-25 | 1944-10-18 | Rangefinder associated with viewfinder |
-
1948
- 1948-10-02 DE DEP7549D patent/DE915649C/en not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE712350C (en) * | 1938-02-03 | 1941-10-16 | Zeiss Ikon Akt Ges | Viewfinder united with the range finder |
DE718203C (en) * | 1939-06-04 | 1942-04-09 | Leitz Ernst Gmbh | Finder for photographic apparatus combined with the range finder |
DE732199C (en) * | 1940-11-02 | 1943-02-25 | Zeiss Ikon Ag | Viewfinder combined with a range finder |
DE747843C (en) * | 1941-01-25 | 1944-10-18 | Rangefinder associated with viewfinder |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3041919A (en) * | 1956-12-20 | 1962-07-03 | Agfa Ag | Combined range and view finder |
US2940354A (en) * | 1957-09-07 | 1960-06-14 | Eastman Kodak Co | Combined range- and view-finders having projected frame lines |
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